Union Army Cipher Disk | Accurate Civil War Replica physics teach school it measures about 7 inches

it measures about 7 inches square

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Thank you to The Rest is Science YouTube channel for featuring our magic trick on

Most games that uses a 3 x 3 or 4 x 4 or 5 x 5 playing area can be played using this set

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Union Army Cipher Disk | Accurate Civil War Replica physics teach school it measures about 7 inchesA precision laser engraved wood version of this famous cipher which was used for the encryption of messages of the Union Army during the American Civil War (1861 1865). It was a system primarily used for flag signals where there was a line of sight or for encrypted morse code messages. Note each disk has a unique serial number as was used in the original wheels. Instructions for use are included. The letters A. J. M on the disk are for Albert J Myer,